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ASM Failure Analysis Case Histories

Handbook of Case Histories in Failure Analysis

Edited by
Khlefa A. Esaklul
Khlefa A. Esaklul
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ASM International
Volume
2
ISBN electronic:
978-1-62708-215-0
Publication date:
1993
Book Chapter

Fatigue Fracture of a Precipitation-Hardened Stainless Steel Actuator Rod End

By
Eli Levy
Eli Levy
de Havilland Inc.
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Published:
1993
Page range:
304 - 306

Abstract

A 17-4 PH steering actuator rod end body broke during normal take-off. Results of failure analysis revealed that the wall thickness of the race was much below the design limits, thus causing the race to rest on the body's swaged edges rather than on the load carrying centerline of the body. This assembly condition generated abnormal high loads on the swaged edges, ultimately resulting in fatigue failure. To prevent a recurrence of similar failure in the future, the dimensions of the race in the spherical bearing were changed, no further failure occurred.

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Eli Levy, 1993. "Fatigue Fracture of a Precipitation-Hardened Stainless Steel Actuator Rod End", Handbook of Case Histories in Failure Analysis, Khlefa A. Esaklul

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